Releasing hook



"JoHN B {yzo`1u1`a 0F CAMDEN, A.new JERSEY. i

Leners `Janne No'. 104,547, aan .new 21, 1870.

Wav- P mnovnmzm m nETAcHmG-Hooxs. i

, i The Schedule referred wip these IietterPatent-.udmaking part of the saune.l

I, Joan., Bozon'm, oi' Camden, in the conntyof Oaiuden, State of New Jersey, have invented an Im-V proved ReleasingfHook, of which the following is a A specification. u y o.

The natureof m-y invention consists in the construe-ff tion of a hook adapted especially for vlaunching ships boats. It is so made that, as soonv as the suspended boat touches the water, it is released from the hook;

" or it can be released from the hook by hand, at pleasi ure; or 1t can bes secured as not to be released in eithcrof the above ways, unless the hook is unlocked.

I will now describe its construction and operation. Figure 1 is a side view, partly insection. Figure 2 is an end view.` i Figure 3 is the latch, in pian. Figure 4 is a modificationof the sance principle.

r Figure 5 is a plan of thelocking-ring.

The hook A is hinged to the, hollow casting B hy a pin, C, so that the lowest part of the hook a' is a little i tothe outside ofthe pin C.

r:The weight upon the hook wouldtnrn it upside` do'wn were it not for -thc latch d hinged' to the casting This latch is forked, as in ig."3, the

lli/'lien this latch is in the position shown in 1,

` 'theiugshcatch npo'irthe swell k at the top end otthehook. i i

If the latch is pulled down `or allowed to iall,. the narrow part of the hook, at on, will pass `throitgh the, latch, and the hook be reversed.

To secure the latch d, so that it eau neitherfall nor be pulled down, I passvover its handle the ring or link l?, which -secures the weight against being released accidentally'.

. round.

The. operation of the hbok is in this way:

When the boat is ready for launching, the ring'l? is lifted off free from the latch, and turned one quarter The weight of the boat upon the hook keeps the end K against the latch d with snilcient friction to prevent the latch falling until the boat touches the water, when the weight, being oli the latch d, falls, and the hook cents' over upside down, releasing the chain which supports the boat. The latch lean also bepulled down by hand (a very slight pull being suf'- icient to overcome the iiction,) and the weight will then be dropped.

It is obvious this feature of the falling of the latch by gravity, and the release of the hook when -the weight is olf, is susceptible of various modifications. One is shown 'in iig. 4, where the latch hooks over the top end of thc hook.

'.lhis hook is also of use on canal-boats and railroad freight-ears, where it is desirable to 'release them from y the drawlne instantly.

What I claim as my invention, and desireto sccnre by Letters Patent, isV

1. The latch d, operating by gravity, in combination with the hook A, so that the hook will detach itselt` Vfrom the draw-chain on being relieved-from strain, in

the manner herein described.

2. The combination of the hook A, latch d, and casting B, either with or without the `locking-link P, operating substantially as herein described.,

, JOHN BOZORTH.

Witnesses:

Enwn. BROWN, Jos. BABY. 

